New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Marketing Manager	Antonio Moreno	Germany	1 2 3 4 5
2	Accountant	Georg Pipps	Argentina	1 2 3 4 5
3	Sales Representative	Patricio Simpson	Brazil	1 2 3 4 5
4	Sales Associate	Hanna Moos	Argentina	1 2 3 4 5
5	Owner	Georg Pipps	Austria	1 2 3 4 5
6	Owner	Pascale Cartrain	Germany	1 2 3 4 5
7	Accounting Manager	Matti Karttunen	Argentina	1 2 3 4 5
8	Sales Consultant	Matti Karttunen	France	1 2 3 4 5
9	Sales Consultant	Georg Pipps	Bulgaria	1 2 3 4 5
10	Owner	Georg Pipps	England	1 2 3 4 5
11	Sales Agent	Georg Pipps	England	1 2 3 4 5
12	Owner	Elizabeth Lincoln	Spain	1 2 3 4 5
13	Marketing Manager	Patricio Simpson	Bulgaria	1 2 3 4 5
14	Accountant	Paul Henriot	Argentina	1 2 3 4 5
15	Accountant	Paul Henriot	France	1 2 3 4 5
16	Marketing Assistant	Hanna Moos	England	1 2 3 4 5
17	Accountant	Paul Henriot	France	1 2 3 4 5
18	Accounting Manager	Pascale Cartrain	Austria	1 2 3 4 5
19	Accountant	Paul Henriot	France	1 2 3 4 5
20	Owner	Georg Pipps	USA	1 2 3 4 5
21	Marketing Manager	Hanna Moos	Argentina	1 2 3 4 5
22	Accountant	Howard Snyder	Austria	1 2 3 4 5
23	Sales Manager	Hanna Moos	Bulgaria	1 2 3 4 5
24	Sales Agent	Matti Karttunen	USA	1 2 3 4 5
25	Accountant	Paul Henriot	Brazil	1 2 3 4 5
26	Sales Manager	Hanna Moos	USA	1 2 3 4 5
27	Owner	Jaime Yorres	England	1 2 3 4 5
28	Marketing Manager	Paul Henriot	Spain	1 2 3 4 5
29	Sales Manager	Patricio Simpson	Italy	1 2 3 4 5
30	Sales Manager	Antonio Moreno	Argentina	1 2 3 4 5
31	Accountant	Hanna Moos	Austria	1 2 3 4 5
32	Sales Consultant	Pascale Cartrain	France	1 2 3 4 5
33	Accountant	Pascale Cartrain	France	1 2 3 4 5
34	Sales Representative	Matti Karttunen	Bulgaria	1 2 3 4 5
35	Sales Agent	Pascale Cartrain	Argentina	1 2 3 4 5
36	Sales Associate	Elizabeth Lincoln	Austria	1 2 3 4 5
37	Accounting Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
38	Sales Consultant	Pascale Cartrain	Italy	1 2 3 4 5
39	Owner	Paul Henriot	Brazil	1 2 3 4 5
40	Accounting Manager	Patricio Simpson	USA	1 2 3 4 5
41	Sales Associate	Hanna Moos	Italy	1 2 3 4 5
42	Marketing Assistant	Hanna Moos	France	1 2 3 4 5
43	Marketing Assistant	Pascale Cartrain	Austria	1 2 3 4 5
44	Sales Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
45	Sales Representative	Georg Pipps	Germany	1 2 3 4 5
46	Marketing Manager	Georg Pipps	Brazil	1 2 3 4 5
47	Sales Consultant	Matti Karttunen	France	1 2 3 4 5
48	Marketing Manager	Matti Karttunen	Spain	1 2 3 4 5
49	Marketing Manager	Howard Snyder	Italy	1 2 3 4 5
50	Sales Manager	Patricio Simpson	Spain	1 2 3 4 5
51	Sales Associate	Matti Karttunen	France	1 2 3 4 5
52	Sales Consultant	Elizabeth Lincoln	Italy	1 2 3 4 5
53	Marketing Assistant	Paul Henriot	Bulgaria	1 2 3 4 5
54	Marketing Manager	Paul Henriot	Austria	1 2 3 4 5
55	Sales Representative	Paul Henriot	Bulgaria	1 2 3 4 5
56	Sales Manager	Hanna Moos	France	1 2 3 4 5
57	Marketing Assistant	Pascale Cartrain	Argentina	1 2 3 4 5
58	Sales Consultant	Antonio Moreno	Bulgaria	1 2 3 4 5
59	Sales Agent	Hanna Moos	Argentina	1 2 3 4 5
60	Sales Representative	Antonio Moreno	Italy	1 2 3 4 5
61	Marketing Assistant	Patricio Simpson	Argentina	1 2 3 4 5
62	Sales Representative	Patricio Simpson	Bulgaria	1 2 3 4 5
63	Sales Associate	Matti Karttunen	USA	1 2 3 4 5
64	Sales Consultant	Pascale Cartrain	Spain	1 2 3 4 5
65	Marketing Manager	Patricio Simpson	Bulgaria	1 2 3 4 5
66	Sales Manager	Howard Snyder	Brazil	1 2 3 4 5
67	Accounting Manager	Jaime Yorres	England	1 2 3 4 5
68	Accountant	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
69	Owner	Howard Snyder	Argentina	1 2 3 4 5
70	Sales Agent	Pascale Cartrain	France	1 2 3 4 5
71	Owner	Antonio Moreno	Brazil	1 2 3 4 5
72	Sales Associate	Elizabeth Lincoln	France	1 2 3 4 5
73	Marketing Assistant	Patricio Simpson	Italy	1 2 3 4 5
74	Marketing Manager	Antonio Moreno	Austria	1 2 3 4 5
75	Owner	Antonio Moreno	Austria	1 2 3 4 5
76	Sales Manager	Antonio Moreno	France	1 2 3 4 5
77	Marketing Manager	Paul Henriot	Germany	1 2 3 4 5
78	Sales Manager	Antonio Moreno	Italy	1 2 3 4 5
79	Accounting Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
80	Sales Manager	Pascale Cartrain	Spain	1 2 3 4 5
81	Sales Manager	Paul Henriot	USA	1 2 3 4 5
82	Accounting Manager	Antonio Moreno	Austria	1 2 3 4 5
83	Sales Associate	Jaime Yorres	France	1 2 3 4 5
84	Sales Agent	Paul Henriot	Argentina	1 2 3 4 5
85	Sales Representative	Antonio Moreno	Germany	1 2 3 4 5
86	Owner	Paul Henriot	Brazil	1 2 3 4 5
87	Sales Associate	Paul Henriot	Bulgaria	1 2 3 4 5
88	Accountant	Patricio Simpson	Italy	1 2 3 4 5
89	Marketing Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
90	Accounting Manager	Georg Pipps	England	1 2 3 4 5
91	Sales Agent	Matti Karttunen	Germany	1 2 3 4 5
92	Sales Associate	Elizabeth Lincoln	Italy	1 2 3 4 5
93	Sales Consultant	Jaime Yorres	France	1 2 3 4 5
94	Accountant	Georg Pipps	Spain	1 2 3 4 5
95	Sales Representative	Pascale Cartrain	Spain	1 2 3 4 5
96	Sales Agent	Patricio Simpson	Italy	1 2 3 4 5
97	Owner	Antonio Moreno	England	1 2 3 4 5
98	Accountant	Elizabeth Lincoln	Spain	1 2 3 4 5
99	Owner	Jaime Yorres	Argentina	1 2 3 4 5
100	Sales Manager	Antonio Moreno	USA	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

Sort Ascending
Sort Descending
Clear Sorting
Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Product Bundles

DevCraft

Web

Mobile

Document Management

Desktop

Reporting & Mocking

Automated Testing

CMS

UI/UX Tools

Debugging

Free Tools

Support and Learning

Productivity and Design Tools

Virtualization

Related Resources

Support & Learning Resources

Find Assistance